255887773 has 2 divisors, whose sum is σ = 255887774. Its totient is φ = 255887772.

The previous prime is 255887767. The next prime is 255887783. The reversal of 255887773 is 377788552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175642009 + 80245764 = 13253^2 + 8958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255887773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255887773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255887783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127943886 + 127943887.

It is an arithmetic number, because the mean of its divisors is an integer number (127943887).

Almost surely, 2^255887773 is an apocalyptic number.

It is an amenable number.

255887773 is a deficient number, since it is larger than the sum of its proper divisors (1).

255887773 is an equidigital number, since it uses as much as digits as its factorization.

255887773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3292800, while the sum is 52.

The square root of 255887773 is about 15996.4925217999. The cubic root of 255887773 is about 634.8676211534.

The spelling of 255887773 in words is "two hundred fifty-five million, eight hundred eighty-seven thousand, seven hundred seventy-three".